University of the State of New York 



New York State Museum 



Frederick J. H. Merrill Director 

 Ephraim Porter Felt State Entomologist 



Bulletin 76 

 ENTOMOLOGY 21 



19th REPORT OF THE STATE ENTO- 

 MOLOGIST 1903 



To the Regents of the University of the State of New York 



I have the honor of presenting herewith my report on the injuri- 

 ous and other insects in the State of New York for the year ending 

 Oct. 15, 1903. 



General entomologic features. The season of 1903 will long be 

 known on account of the abnormal abundance of plant lice of 

 various species, which have not only been exceedingly destructive 

 to fruit trees in particular but the prolongation of their depreda- 

 tions far beyond the usual date was specially injurious to young or 

 recently set trees. The latter part of the summer the San Jos6 

 scale, A s p i d i o t u s pernio, iosus Comst., bred so exces- 

 sively that many trees were literally covered with half grown scale 

 insects toward the end of the season. The depredations of the 

 elm leaf beetle, Galerucella luteola Mull., have con- 

 tinued in the Hudson river valley though the spraying operations 

 of recent years have reduced their numbers very largely in Albany 

 and Troy. An interesting feature of this insect's history was its 

 presence in excessive numbers at Saratoga Springs, where it 

 would undoubtedly have caused severe injury had it not been for 

 the prompt spraying instituted by the village authorities. The 

 white marked tussock moth, Notolophus leucostigma 

 Abb. & Sm., has caused less damage than usual in recent years 



